diff --git a/tests/test_large_userbase.py b/tests/test_large_userbase.py
new file mode 100644
index 000000000..567a5df69
--- /dev/null
+++ b/tests/test_large_userbase.py
@@ -0,0 +1,68 @@
+# -*- coding: utf-8 -*-
+# authentic2 - versatile identity manager
+# Copyright (C) 2010-2019 Entr'ouvert
+#
+# This program is free software: you can redistribute it and/or modify it
+# under the terms of the GNU Affero General Public License as published
+# by the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+
+import faker
+import pytest
+
+from django.contrib.auth import get_user_model
+from django.contrib.contenttypes.models import ContentType
+
+from authentic2.models import Attribute, AttributeValue
+
+
+User = get_user_model()
+
+pytestmark = pytest.mark.slow
+
+
+@pytest.fixture
+def large_userbase(db, freezer):
+    dob_attribute = Attribute.objects.create(
+        kind='birthdate',
+        name='birthdate',
+        label='birthdate',
+        required=True)
+
+    # fix time window
+    freezer.move_to('2020-01-01')
+    fake = faker.Faker(locale='fr_FR')
+    faker.Faker.seed(0)
+
+    for i in range(100):
+        User.objects.bulk_create(
+            User(
+                first_name=fake.first_name() + ' ' + fake.first_name(),
+                last_name=fake.last_name(),
+                email=fake.ascii_safe_email()) for i in range(1000))
+
+    user_ids = User.objects.values_list('id', flat=True)
+    user_ct = ContentType.objects.get_for_model(User)
+
+    AttributeValue.objects.bulk_create(
+        AttributeValue(
+            content_type=user_ct,
+            object_id=user_id,
+            attribute=dob_attribute,
+            verified=True,
+            multiple=False,
+            content=fake.date())
+        for user_id in user_ids)
+
+
+def test_large_userbase(large_userbase):
+    pass